Reproductive Pathology Practice Questions

Q: Corkscrew shaped endometrial glands are seen in which phase of the menstrual cycle?

Late secretory phase. **Explanation:** The morphology of the endometrial glands undergoes predictable changes under the influence of estrogen and progesterone. The correct answer is **Late secretory phase** because this phase is characterized by maximal glandular tortuosity [1]. 1. **Why Late Secretory Phase is correct:** Following ovulation, progesterone from the corpus luteum causes the endometrial glands to become increasingly coiled and dilated to maximize surface area for nutrient secretion. By the late secretory phase (days 20–28), these glands achieve a classic **"corkscrew" or "saw-tooth" appearance** [1]. The stroma also becomes edematous and undergoes a pre-decidual reaction. 2. **Why other options are incorrect:** * **Early/Late Proliferative Phase:** Under estrogen influence, glands are initially tubular, thin, and straight [1]. While they become slightly more coiled in the late proliferative phase, they remain narrow and lack the dramatic "corkscrew" morphology. * **Early Secretory Phase:** This phase is histologically defined by **sub-nuclear vacuoles** [1] (the first sign of ovulation). While the glands begin to coil, the prominent corkscrew shape is not yet fully developed. **High-Yield Pearls for NEET-PG:** * **Dating the Endometrium:** The most reliable sign of recent ovulation is the presence of sub-nuclear vacuoles (Day 16-17) [1]. * **Arias-Stella Reaction:** Hypersecretory glands with enlarged, hyperchromatic nuclei; seen in pregnancy (normal) or ectopic pregnancy. * **Chronic Endometritis:** Diagnosed by the presence of **Plasma Cells** in the endometrial stroma. * **Swiss-Cheese Appearance:** Characteristic of Cystic Glandular Hyperplasia (due to unopposed estrogen). **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Female Genital Tract, pp. 1011-1013.

Q: The lesion shown below is caused by:

HPV. ***HPV*** - **HPV** causes characteristic **koilocytes** with **perinuclear halos** and **pyknotic nuclei**, which are pathognomonic cytopathic effects seen in cervical dysplasia and condylomas. - Associated with **squamous cell carcinomas** and **adenocarcinomas** of the cervix, vulva, and other anogenital regions through oncogenic strains (16, 18). *HSV* - **HSV** produces **multinucleated giant cells** with **intranuclear inclusion bodies** (Cowdry A bodies) and **ground glass nuclei**. - Causes **vesicular lesions** that ulcerate, not the keratinizing lesions with koilocytes typical of HPV infection. *HIV* - **HIV** does not directly cause specific histologic lesions but predisposes to **opportunistic infections** and **malignancies**. - Associated with **Kaposi's sarcoma**, **lymphomas**, and **cervical cancer** (through HPV co-infection), but doesn't produce koilocytic changes. *EBV* - **EBV** causes **atypical lymphocytes** and is associated with **infectious mononucleosis** and certain **B-cell lymphomas**. - Produces **Reed-Sternberg-like cells** in lymphoid tissue, not squamous epithelial changes with perinuclear halos.

Q: Type 2 endometrial carcinoma is associated with what histological finding?

Atrophy. **Explanation:** Endometrial carcinoma is broadly classified into two types (Bokhman’s Classification). Understanding the distinction between them is high-yield for NEET-PG. **Why Atrophy is Correct:** **Type 2 Endometrial Carcinoma** (Non-endometrioid) typically occurs in older, postmenopausal women. Unlike Type 1, it is **estrogen-independent** and does not arise from a background of endometrial hyperplasia. Instead, it develops in a background of **atrophic endometrium**. The molecular driver is often a **p53 mutation** rather than the PTEN mutations seen in Type 1. Because the surrounding tissue is not stimulated by estrogen, it remains thin and atrophic. **Analysis of Incorrect Options:** * **A. Hyperplasia:** This is the precursor lesion for **Type 1 Endometrial Carcinoma**. Type 1 is estrogen-dependent, occurs in younger/perimenopausal women, and is associated with obesity and PCOS. * **B. Hypertrophy:** This refers to an increase in cell size. While the myometrium can undergo hypertrophy (e.g., in pregnancy), it is not a characteristic histological background for the development of endometrial malignancy. * **C. Metaplasia:** While various metaplasias (squamous, ciliated, etc.) can occur in the endometrium, they are not the defining background state for Type 2 carcinomas. **NEET-PG High-Yield Pearls:** * **Type 1:** Endometrioid histology, Estrogen-dependent, PTEN mutation, associated with **Hyperplasia**. * **Type 2:** Serous or Clear cell histology, Estrogen-independent, **p53 mutation**, associated with **Atrophy**. * **Prognosis:** Type 2 is much more aggressive, has a higher risk of lymph node metastasis, and carries a poorer prognosis compared to Type 1. * **Precursor for Type 2:** Serous Endometrial Intraepithelial Carcinoma (SEIC).

Q: A 35-year-old female underwent hysterectomy, which revealed specific gross and histological features. What is the most likely diagnosis?

Leiomyoma. ***Leiomyoma*** - **Gross features** include **well-circumscribed**, **whorled**, **white-gray nodules** that are firm and rubbery in consistency. - **Histologically** shows **interlacing smooth muscle bundles** with **minimal nuclear atypia** and **low mitotic index** (<10 mitoses per 10 HPF). *Carcinoma endometrium* - **Gross appearance** typically shows **friable**, **hemorrhagic**, or **necrotic tissue** rather than well-circumscribed nodules. - **Histologically** demonstrates **malignant glandular epithelium** with **nuclear pleomorphism** and **loss of normal architecture**. *Malignant mixed Mullerian tumor* - **Gross features** include **large**, **polypoid**, **hemorrhagic masses** that are often **necrotic** and **friable**. - **Histologically** contains both **malignant epithelial** and **mesenchymal components**, unlike the homogeneous smooth muscle appearance. *Leiomyosarcoma* - **Gross appearance** shows **areas of coagulative necrosis**, **hemorrhage**, and **soft consistency** unlike the firm whorled pattern. - **Histologically** exhibits **high mitotic rate** (>10 mitoses per 10 HPF), **marked nuclear atypia**, and **coagulative tumor cell necrosis**.

Q: Schiller-Duval bodies are seen in which of the following tumor types?

Yolk sac tumor. **Explanation:** **Schiller-Duval bodies** are the pathognomonic histological hallmark of **Yolk Sac Tumors** (also known as Endodermal Sinus Tumors). These structures consist of a central capillary surrounded by visceral and parietal layers of neoplastic cells, mimicking a primitive glomerulus. 1. **Why Yolk Sac Tumor is correct:** These tumors are the most common testicular germ cell tumor in children [1]. They characteristically produce **Alpha-Fetoprotein (AFP)**, which serves as a vital serum marker for diagnosis and monitoring. Histologically, the presence of Schiller-Duval bodies is definitive, though they are only present in about 50% of cases. 2. **Why other options are incorrect:** * **Teratoma:** Characterized by tissues derived from all three germ layers (ectoderm, mesoderm, endoderm), such as cartilage, hair, or intestinal epithelium [1]. * **Seminoma:** The most common germ cell tumor in adults. Histology shows large, uniform cells with clear cytoplasm (“fried-egg appearance”) and lymphocytic infiltration in the stroma [1]. * **Choriocarcinoma:** A highly malignant tumor characterized by the proliferation of cytotrophoblasts and syncytiotrophoblasts [1]. It is associated with markedly elevated **hCG** levels and lacks Schiller-Duval bodies. **High-Yield Clinical Pearls for NEET-PG:** * **Tumor Marker:** AFP is elevated in Yolk Sac Tumors; hCG is elevated in Choriocarcinoma. * **Hyaline Droplets:** Besides Schiller-Duval bodies, Yolk Sac Tumors often show eosinophilic, PAS-positive hyaline droplets. * **Age Factor:** If a testicular mass is presented in a child under 3 years old, Yolk Sac Tumor is the most likely diagnosis [1]. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Lower Urinary Tract and Male Genital System, pp. 979-980.

Question 1

Corkscrew shaped endometrial glands are seen in which phase of the menstrual cycle?

Accepted Answer

Late secretory phase

Answer

Early proliferative phase

Answer

Late proliferative phase

Answer

Early secretory phase

Question 2

Reinke crystalloids can be seen in which of the following sex cord-stromal tumors?

Accepted Answer

Leydig cell tumor

Answer

Granulosa cell tumor

Answer

Gonadoblastoma

Answer

Thecoma

Question 3

The lesion shown below is caused by:

Accepted Answer

HPV

Answer

HSV

Answer

HIV

Answer

EBV

Question 4

Type 2 endometrial carcinoma is associated with what histological finding?

Accepted Answer

Atrophy

Answer

Hyperplasia

Answer

Hypertrophy

Answer

Metaplasia

Question 5

Which tumor typically presents with a grape-like cluster appearance and consistency?

Accepted Answer

Embryonal rhabdomyosarcoma

Answer

Embryonal cell carcinoma

Answer

Adenocarcinoma

Answer

Clear cell carcinoma

Question 6

A study of patients with postmenopausal uterine bleeding reveals that some of them have malignant neoplasms that arise from prior atypical hyperplastic lesions. The peak incidence is between 55 and 65 years of age in women who have obesity, hypertension, and/or diabetes mellitus. Molecular analysis reveals mutations of the PTEN tumor suppressor gene in most of them. Their malignancies tend to remain localized for years before spreading to local lymphatics. Which of the following neoplasms is most likely to have these characteristics?

Accepted Answer

Endometrioid carcinoma

Answer

Clear cell carcinoma

Answer

Leiomyosarcoma

Answer

Mullerian mixed tumor

Question 7

Which of the following is NOT true about atrophic testis?

Accepted Answer

Leydig cell hypoplasia

Answer

Lymphocyte infiltration

Answer

Small size

Answer

Normal Sertoli cells

Question 8

Which of the following markers is NOT typically elevated in a testicular teratoma?

Accepted Answer

Carcinoembryonic antigen (CEA)

Answer

Alpha-fetoprotein (AFP)

Answer

Human chorionic gonadotropin (HCG)

Answer

Lactate dehydrogenase (LDH)

Question 9

A 35-year-old female underwent hysterectomy, which revealed specific gross and histological features. What is the most likely diagnosis?

Accepted Answer

Leiomyoma

Answer

Carcinoma endometrium

Answer

Malignant mixed Mullerian tumor

Answer

Leiomyosarcoma

Question 10

Schiller-Duval bodies are seen in which of the following tumor types?

Accepted Answer

Yolk sac tumor

Answer

Teratoma

Answer

Seminoma

Answer

Choriocarcinoma

Reproductive Pathology — MCQs

Reproductive Pathology — MCQs

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